What problem does it solve? Before a v0 plan can mean anything, someone must decide the product's shape — repo structure, tech stack per surface, where the v0 runs, and the data strategy — and record those decisions durably instead of letting them dissolve into chat history. ## Core Features & Use Cases - Four-decision workflow: Walks repo shape, tech stack, v0 runtime location (local-first), and v0 data strategy in order, writing each answer as an ADR at docs/product/adr/NN-<slug>.md. - Precedence-based decision rule: Applies project binding > team default > ask, naming any lower rule that would have chosen differently in Alternatives considered. - Human ratification gate: Decisions that cost money, foreclose options, or contradict the target repo are stamped decided_by: human only after explicit approval; unanswered ones land as status: parked. - Use Case: After a dev review of a target repo, run this Skill to produce ratified ADRs covering monorepo shape, per-surface stack, local-first deployment, and mocked API-shaped data, each with alternatives, consequences, and a revisit-when trigger. ## Quick Start Use the architecture skill to decide and record the v0 repo shape, tech stack, runtime location, and data strategy as ADRs based on the dev review findings.